[lxc-users] Mount Directory or Move Image Location?
serge.hallyn at ubuntu.com
Fri Oct 30 22:14:43 UTC 2015
No, wait. I thought you wanted the other directory to be where the
containers are coming from.
To bind mount the directory into containers, use a 'disk' device
type. I.e. if the directory is mounted on the host at /mnt/fastdisk,
and your container is container-name,
lxc config device add container-name fastdisk disk source=/mnt/fastdisk path=/opt
Will cause 'fastdisk' to be mounted under /opt in the container.
Quoting B G (bg85305 at gmail.com):
> Thanks Serge.
> You suggest to bind mount the underlying directory from the host OS?
> I suppose that we could do that for the root file system anywhere inside
> the image file system?
> Once I restart the container should be transparent to the container that
> the underlying file-system has mounted from a different location?
> That sound right... I was thinking about it in a much more complicated way
> like you would a VDI for a VM. That is better.
> On Fri, Oct 30, 2015 at 2:23 PM, Serge Hallyn <serge.hallyn at ubuntu.com>
> > Quoting B G (bg85305 at gmail.com):
> > > I need to jam a ton of data from another drive partition into a
> > > container... What is the best way to:
> > >
> > > 1. Mount a directory from a different drive on the host
> > >
> > > or
> > >
> > > 2. Change the image location to the alternative drive on the host
> > >
> > > I have been searching a ton and can't see the best way to do this. I
> > have
> > > an NVME partition that I want to use for really fast IO but it is not the
> > > default one the containers are created in...
> > >
> > > Appreciate any advice..
> > Are you using lxd or lxc?
> > The easiest way is probably to just bind mount the fast directory onto
> > /var/lib/lxc or /var/lib/lxd. If I'm understanding you right.
> > Personally on my laptop I have a little 16G m.2 ssd formatted as btrfs
> > and mounted onto /var/lib/lxd to give me something like .5-second container
> > creations.
> > -serge
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